Question

A velocity vs. time graph for an object is shown.

A graph titled Velocity versus Time shows time in seconds on the x axis, numbered 0 to 5, velocity in meters per second on the y axis, numbered 0 to 5. A line starts at the origin and ends at (5, 5).
Which best describes the acceleration of the object?

constant and positive
constant and negative
changing and positive
changing and negative

Answer 1

Constant and positive.

Reason: acceleration is the slope of a velocity vs time graph. The velocity increases linearly from 0 to 5 m/s over 5 s, giving a constant slope of (5−0)/(5−0) = 1 m/s² (positive).